Design and Analysis of Front Side Modular Multilevel Converter for Smart Transformer in 15 kV Arba Minch Distribution Network Using Diverse Controllers and Multicarrier Modulation

Table 1

Specification of the system.

Parameter	Value
AC grid line voltage ()	15 kV
Grid side inductance ()	10 μH
Grid side resistance ()	0.01 Ω
Submodule arm inductance (L_arm)	12 mH
Submodule arm resistance (R_arm)	0.1 Ω
Submodule arm capacitance (C_SM)	0.1 mF
DC link capacitance (C_DC Link)	10 mF
Grid frequency ()	50 Hz
Converter switching frequency (fc)	4 kHz
Converter maximum capacity (S)	50 kVA
No of submodule (SM)	4
PI controller parameters
Proportional gain (KP)	0.01
Integral gain (KI)	0.00023